γδ T cells exhibit multifunctional and protective memory in intestinal tissues.

γδ T cells exhibit multifunctional and protective memory in intestinal tissues.
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DOI:
10.1016/j.immuni.2013.06.015
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发表时间:
2013-07-25
期刊:
影响因子:
32.4
通讯作者:
Lefrançois L
Lefrançois L
中科院分区:
医学1区
文献类型:
--
作者:
Sheridan BS;Romagnoli PA;Pham QM;Fu HH;Alonzo F 3rd;Schubert WD;Freitag NE;Lefrançois L

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T细胞记忆和疫苗设计目标的研究集中在携带αβ T细胞受体的T细胞所包含的记忆。或者,γδ T细胞被认为提供快速免疫,特别是在粘膜边缘。在这里,我们已经表明,粘膜γδ T细胞的一个独特的子集对口腔单核细胞增生李斯特菌(Lm)感染产生免疫应答,导致小鼠肠粘膜中多功能记忆T细胞的发育,该细胞能够同时产生干扰素-γ和白细胞介素-17 A。用口服Lm而不是口服沙门氏菌或静脉注射Lm激发感染,诱导记忆γδ T细胞的快速扩增,表明对引发病原体的背景特异性。重要的是,记忆γδ T细胞能够提供增强的抗感染保护。这些发现说明了γδ T细胞在肠粘膜中具有适应性免疫标志的先前未被认识的作用。
The study of T cell memory and the target of vaccine design has focused on memory subsumed by T cells bearing the αβ T cell receptor. Alternatively, γδ T cells are thought to provide rapid immunity particularly at mucosal borders. Here we have shown that a distinct subset of mucosal γδ T cells mounts an immune response to oral Listeria monocytogenes (Lm) infection leading to the development of multifunctional memory T cells in the murine intestinal mucosa that is capable of simultaneously producing interferon-γ and interleukin-17A. Challenge infection with oral Lm, but not oral Salmonella or intravenous Lm, induced rapid expansion of memory γδ T cells suggesting contextual specificity to the priming pathogen. Importantly, memory γδ T cells were able to provide enhanced protection against infection. These findings illustrate a previously unrecognized role for γδ T cells with hallmarks of adaptive immunity in the intestinal mucosa.
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